Wood-skinning machine.



C. H. CARTER.

WOOD SKINNING MACHINE.

APPLICATION FILED BEPT.15, 1010.

Patented Apr. 4, 1911.

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WOOD SKINNING MA'OHINE.

APPLIOATION'IILED SBPT.15,'1910.

988,860. 8 I Patented Apr.4, 1911. V

4 SHEETS-SHEET 2.

G. H. CARTER.

WOOD SKINNING MACHINE.

APPLICATION I ILBD SEPT. 15, 1010.

Patented Apr. 4, 1911.

4 SHEETS-SHEET 3- fiaries ff. Car/2 1:

WWW

G. H. CARTER.

WOOD SKINNING MACHINE.

-APPLIOATION II'LBI) SEPT. 15, 1910.

988,860. Patented Apr. 4, 1911.

4 SHEETS-SHEET 4.

UNITED STATES PATENT oFFIoE.

CHARLES H. CARTER, or FARMERS FORK, VIRGINIA.

'IJOOD-SKINNING MACHINE.

Specification of Letters Patent.

Patented Apr. 1, 1911.

Application filed September-15, 1910. Serial No. 582,237.

To all whom it may concern: 1

This invention relates to wood skinning machines and the object of the inventionis 'the provision of aportable wood skinnin machine whic'h may be readilytr'ansporte fromplaoe to 'placeand which will efiec tuall'y' remove'the-bark from logs so that they may be utilized for purposes of making wood pulp i i A further objectof the invention is the provision of a'pairof stationary knives and a reciprocating log carriage together with means formats the log and automatically dump the same from the carriage after the kniveshave performed theirfunction.

A still further object of the invention is the provision ofa portable truck having an automatically reciprocated log carriage mounted thereon together with log' rotatingmechanism which acts in conjunction with stationary knivesto remove the bark from the log and further means to dump the log after being treated by the knives.

Further'objeots of the invention will ap pearas the followingspecific description is Referringmore particularly to the draw-- read in connection with the accompanyii drawing whiohforms a part of this application,'and in which:

Figure 1 is a side elevation with parts broken away? Fig. 2 is a top plan view with the traction wheels removed. Fig. 3 is a. longitudinal section taken on the line of Fig. 2. Fig. 4 is a transverse section taken on the line 44 of Fig. 2. Fig. 5 is a similar section taken on -the line 5-5 of-Fig. 2'. Fig. 6 is a detail top plan view of the frame with parts removed therefrom. Fig. 7 is an enlarged detail sectional view of the log releasing mechanism. Fig. 8 is an enlarged detail sectional view of the pawl controlling rod and its associated spring.

'ing 1 represents the truck frame which is mounted upon the traction wheels 2 and is provided with a pair of longi udinal track rails 3 upon which the log carriage i is adapted to travel. The truck" frame has joumale'd' therein the transverse driving shaft 5 which is providedintermediate its ends with a bevel gear 6 which is loosely mounted upon the shaft and is provided with a clutch member 7 adapted tobe en gaged by a clutch member 8 splined'upon the shaftand controlled by the forked end 9 of a bell crank lever 10 which ispivoted upon a cross bar- 11 and operated by a hand lever 12 throughthe rod 13.-

Power may be applied to the shaft 5 in any suitable manner and a simple form is showh in the belt wheel 14: keyed to the shaft 5 outside of the balance or fly wheel 15. The

gear 6 is constantly in engagement with a bevel pinion 16 which is keyed to the for shaft 17 v is provided with a groove 18 throughout its length and splined upon the shaft 1s a friction gear 19 which is adapted to 0- e a disk 20 fprmed up t 18% 21 whiclris journaled in bearings 22 a .s a spi'ing 23 surrounding. the

.wa'rd end of a longitudinal shaft 17. The

same between one of the bearings and acollar 24so as to normally force the disk 20 into engagement with the gear 19. ,The shaft 21 carries a toothed pinion 25. which is adapted to enga e a rack bar 26 carried on the underside of t e carriage 4: so thatthe' carriage may be moved back and forth over the track rails as willihereinafter be described, it being understood that thegear 19 is shiftable over the face of the disk so as to control the speed of the carriage and to reverse its movement.

To control the movement of the carriage the gear 19 is provided with a grooved collar 26 which is engaged by a bifurcated arm n 27 carried by a longitudinally movablerod 28. This rod may be controlled by a lever 29 through a link 30 so as togovern the speed of the carriage as desired. At diiferent points upon-the rod, there are adjustably mounted suitable stop collars 31 and 32 which are adapted to be engaged by a depending arm '33 carried upon a bearing bracket S idepending from the rear log head 35. The disk 20 may be entirely removed from engagement with the gear l9 by means of a lever 36 pivoted upon the cross bar 37 and having a roller 38 journaled there0n7 adapted to engage the collar. 24. This lever is controlled'by a lever 390perating over a segment 40 carried by the front of the frame 1. p

The carriage 4 comprises a substantially rectangular frame having ,the log heads 35 and 41 extending up 'from opposite ends thereof and each provided with the log clutching dogs .42 which revolve in bearings in the'collar 48kwhich is lnte'ralwith the gear 46., In this manner it wi 1 be seen that the dog 42 may be continuouslyrotated during the movement of the Toarnage upon the track rails.

The head 41 isslidably mounted upon a. bed plate 9 and has-passing therethrough a shaft'50 which is connectedto the head 35 and has pivotally mounted upon its free end a lever 51 which-is adapted to operate the-head to throw the dog 42into engage- ,meht with the'log 52- shown in dotted lines in F igs. 3-and 5. This lever has mounted upon its lower end a pawl 53 which is.

adapted to engage a rack bar 54 having ratchet teeth 55 and 56 formed 'upon its upper and lower faces respectively. The lower rackteeth 56 are adapted to been gaged by a pawl 57l1aving a weighted lower end so as to normally engage the teeth and lock therack bar and head in adjusted posi: tion as accomplished by the lever 51. The connecting rod 58 carried uponthe lever 51 foroperat-ing the pawl 53. has secured to its lower end a sleeve 59 having slots 60 formed therein to receive the transverse pin 61 carried upon the upper end of the connectinglink or rod 62. Surrounding the sleeve 59- is a spiral spring 63 which is positioned between collars 64 and 65 carried by the sleeve.

The collar 64; is keyed to the end of the sleeve and the collar 65 is loosely mounted thereon and is operated by the pin 61. The rod 58 is connected to a hand lever 66 pivoted upon the lever 51 which when operated raises the rod 58 and consequently lowers the operating end of the pawl 53 into engagement with the teeth of the rack bar. By rocking the lever 51 back and forth upon itspivotal point at the endgof the rod 50, the pawl 53 will positively engage the teeth 55 and force the head 41 forward against the tension of the spiral springs 67 and in its opposite movement will ride idly over the teeth. As the rack bar and li'e ad move forward to cause the engagement of the dogs 42 with the log, the pawl 57 engages the teeth 56 and locks them inadjusted position. I

In order to release the pawl 57 from the rack 56 and permit the springs 67 to return the-head 41 to normal position and thus disengage the dogs from th log, there is mounted upon the cross bar 37, an upstanding arm 68 which lies in patlfdf lower end of the dog 57 and'acts .to-engage the same at a time when the arm/l5 forces the rod 28 and thereby the gear 19 intofthecenter of the disk 20, thus disengaging the log-at a time when the carriage is substantially stationary. The momentum of the carriage however,- carries it a slight distance farther on the tracks so that the gear 19 will be moved to the opposite side-"of the.

disk 20 and .the rotation of the shaft 21 thus upon the side bars of the carriage so as to, arrange. the arms at an incline whereby when the log is disconnected from the logs it will roll down the arms 69 and ofi the carriage onto suitable skidswhich may be provided for receiving the same. a

' R'gidly mounted upon the truck fra 'e l on'opposite sidesof the track 3 are knife standards 7 0 71 upon the uppen ends of which are pivoted the knife holders 7273. These knife holders. adjustably carry the knife blades 74 so as to properly engage the opposite sides of-the lo assho'wn in Fig. 5, The knife holder 72 is inclined upwardly so as to position the knife upon one side of the log above its horizontal center and the knife holder 73 is arranged horizontally so as to,

bring the knife which it carries Into engagement with the logbelow the horizontal center.

In practice, the knife holder 72 with its knife 74 is adapted to do the actual work while the -knife holder 73 and its knife 74 are auxiliary and adapted to complete the skinning of the log andto effectually take olf any bark. Thek'nife holder 72 has passing through its free' end a rod 75 with a limiting collar 76' on its outer end and a similar collar 77 below the arm so as to form a stop for. the spiral spring 78. The lower end of the rod 75 is connected to one arm of a bell crank'lever 79 which is operated by a rod 80 connected above the pivotal point of a' lever 81which ifs-mounted upon the side of the truck franie 1 and adapted to travel over a se ment 82. By operatingthe lever 81, the position of the knife holder 72 and its knife may be properly adjusted. The free end of the knife holder 73 hasa rod 83 passing therethrough with a stop collar 84 secured below the end of the holder-73 and a similar collar 85 secured at its'free l end and forming an abutment for the spring 86 which ispositioned between the same and the holder 73. The free end of this rod83 is connected to a bell crank lever 87 which is controlled by a lever 88 through a rod or link 89. By manipulating the lever 88 the rod 83 is pulled downwardly and the knife of the holder 73 is raised so as to biing' the gear 19 and the disk 20 being ar- =1 suitable platforrrr knife. into engagement with the log. After the passage of the log between the knives the stop collars 76 and 84' will limit the downward and upward movement of the knives ranged immediately under the knives are Jrequently clogged by chips and in order to prevent this, a casing90 is placed over these parts for the purpose of shielding them. A

,91 having inwardly exadapted to removably entending hooks 92 gage eyes. 93 earned by the frame which is supported in horizontal position by means ofithe links 94 in position for the operator -to-manipulate the levers.

is placed between shaft 17. After this'the of the device, the 10 the heads and clampe in position by the dogs as before described. The clutch 8 1s then thrown into engagement with the clutch member 6 so as to rotate the lever 36 is released In the operation so as to permit the spring 23 to force the i the knives to be pressed into grooves permitting them to ride i work which the knives are disk 20 into engagement with the disk 19. When the log comes into the radius of action of the knives the levers 81 and 88 are operated to throw the knives into engagement with the log and to bring such pressure to bear thereupon aswill be roper to remove the bark and small knots rom the log, the springs 78 and 86 taking up any parts which the knives cannot cut through and causing.l

an over ridges. By manipulating the lever 29 the speed of the carriage may be governed according to the doing so that the carria e will not complete its movement before a the bark has been removed from the 10 When the log has passed the knives the pawl 57 has its depending end'brought into en agement with the arms 68 and thus the rac r bar is released and the springs 67 force ,the head 41 away from the log and thus release it so that it may roll down the arms 69 onto suitable skids, not shown, The

distance beyond the point where the paw in posit on 57 strikes the arm 68 so that the arm 33 is brought into engagement with the stop collar 32, thus throwing the arm 27 and the gear 19 to the opposlte side of the disk 20. This reverses the rotation of the shaft 21 and the carriage is thus returned. Upon the return movement of the carriage the arm 33 enga es the collar 31 and again reverses the mec anism so as to cause the forward movement of the carriage. At this time the operator ishould manipulate the lever 36 so as to disengage the disk 20 from the gear 19-a'nd thus stop the movement of the carriage. When a new log is about to be placed the lever 12 should be operated to unclutch the shaft 5 with the gear (3 and thereby stop the rotation of the shaft 17. A

new 10 may then be placed in positionas before escribed and theoperation repeated. Having thus described the invention, what is claimed isi 1. In a machine of the character described, the combination with a portable truck frame, of a log'carriage slidably mounted thereon, means for reciprocating said log carriage, means for manually controlling the movement of the carriage and the speed thereof,

.log holding-means on the carriage, means for rotating said log, means for releasing said log holding means, and means for discharging the log from the carriage after the log holding means is released.

2. In a device of the class described, the combination with a portable truck frame, a

log carriage slidably .mounted thereon,

means to operate the carriage over the truck frame, means to automatically reverse the movement thereof, a stationary log holding head mounted on the carriage, a movable log holding head mounted on the carriage, means to hold said movable head in engage ment with the log, means to rotate the log in the head, a pair of oppositely disposed cutting knives arranged to en means to release the movable ead after the log has passed the knives, and means to force the movable head to normal osition whereby the log is released and discharged from the carriage.

3. In a machine of the character described, the combination with a slidablymounted log carriage, of means to automatically reciprocate the same, a stationary and a movable head on said log carriage, rotating logdogs journaled in said heads, means to rotate one of the dogs during the reciprocation of the carriage, means to force the movable head with'its do to-be treated, means to automatically release said holding means, means to return the movable head to normal position to release the dogs from the 10 and means toreceive and discharge the log from the carriage when said head is turned to normal.

4. A device of the class described comprising a portable truck frame, a pair of stationary oppositely disposed. cutting knives mounted thereon, a carriage adapted to be reciprocated back and forth past said knives, and means for rotating a log on the carriage.

5. A device of the class described comprising a ortable truck frame, a pair'o stationary nives thereon, a carriage mounted on the truck frame, means to reciprocate the-same past the knives, means to rotate a log upon the carriage, the knives into engagement'with the log.

6. A device of the class described comprising a reciprocatin lo carriage, a stationary and a movablehea mounted on said carriage, log dogs journaled in said heads, means for reciprocating the carriage, means and means to throw age the log,

into engagement with the log.

&

for rotating one of the dogs during the reciprocation of the carriage, means to throw the. movable head and its dog into engagemovement of the carriage, and means to- 1 throw said head to normal position upon therelease thereof, together with stationary knives adapted to actnpon a log held By 10 the dogs.

In testimony whereof I afiix my in presence of two witnesses.

CHARLES H. CARTER.

Witnesses:

A. T.'JOHNSON R. J. Lnws.

signature 

